P0499 2017 Chevrolet Silverado Code - Evaporative Emission System Vent Valve Control Circuit High
Quick Answer
The P0499 code on a 2017 Chevrolet Silverado relates to the Evaporative Emission System Vent Valve Control Circuit High. Common causes include Faulty evaporative emission system vent valve, Wiring or electrical issues in the vent valve control circuit, Corrosion or damage to connectors in the system. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
- What it means
- P0499 2017 Chevrolet Silverado indicates Evaporative Emission System Vent Valve Control Circuit High.
- Common causes
- Common causes include Faulty evaporative emission system vent valve, Wiring or electrical issues in the vent valve control circuit, Corrosion or damage to connectors in the system.
- Severity
- Low - monitor the vehicle and repair when practical.
- Can I drive?
- The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
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Code P0499 2017 Chevrolet Silverado Description
The P0499 code on a 2017 Chevrolet Silverado relates to the Evaporative Emission System Vent Valve Control Circuit High. This code is triggered when the Engine Control Module (ECM) detects that the voltage signal from the evaporative emission system vent valve control circuit is higher than normal. The evaporative emission system is responsible for controlling the release of fuel vapors from the fuel tank into the engine intake to be burned, preventing them from escaping into the atmosphere.
Common Causes of P0499 2017 Chevrolet Silverado
- Faulty evaporative emission system vent valve
- Wiring or electrical issues in the vent valve control circuit
- Corrosion or damage to connectors in the system
- Faulty ECM (Engine Control Module)
- Vacuum leaks in the EVAP system
Symptoms of P0499 2017 Chevrolet Silverado
- Check Engine light is illuminated
- Reduced fuel efficiency
- Rough idling or stalling
- Strong fuel odor
- Failed emissions test
How to Fix P0499 2017 Chevrolet Silverado
- Perform a thorough inspection of the evaporative emission system vent valve and control circuit.
- Test the vent valve for proper operation and check for any wiring or connector issues.
- Replace the vent valve if it is found to be faulty or stuck open/closed.
- Repair or replace any damaged wiring or connectors in the control circuit.
- Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0499 2017 Chevrolet Silverado
The typical repair costs for resolving a P0499 code on a 2017 Chevrolet Silverado can range from $150 to $300, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It is recommended to check local rates for a more accurate estimate before proceeding with the repair.
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Frequently Asked Questions about P0499 2017 Chevrolet Silverado Code
1. What does the OBDII code P0499 mean on a 2017 Chevrolet Silverado?
P0499 indicates an issue with the Evaporative Emission System Vent Valve Control Circuit being stuck in a high voltage condition, potentially caused by a wiring or component failure.
2. What are the common symptoms of the P0499 code on a 2017 Chevrolet Silverado?
Symptoms may include an illuminated check engine light, difficulty filling the gas tank, a slight decrease in fuel efficiency, and potential fuel odors due to the EVAP system malfunction.
3. What causes the P0499 code on a 2017 Chevrolet Silverado?
Common causes include a faulty EVAP vent valve, damaged wiring or connectors, a blown fuse, or corrosion in the electrical connections.
4. Can a P0499 code affect drivability on a 2017 Chevrolet Silverado?
The P0499 code typically does not affect drivability, but it may cause emissions issues or prevent the vehicle from passing an emissions test.
5. How do you diagnose the P0499 code on a 2017 Chevrolet Silverado?
Diagnosis includes checking the vent valve's electrical circuit for continuity, inspecting wiring and connectors for damage, and testing the vent valve for proper operation using a scan tool or multimeter.
6. Can a loose gas cap trigger the P0499 code on a 2017 Chevrolet Silverado?
No, a loose gas cap is unlikely to trigger the P0499 code, as this code specifically relates to the vent valve control circuit.
7. How can you fix the P0499 code on a 2017 Chevrolet Silverado?
Repairs may involve replacing the EVAP vent valve, repairing or replacing damaged wiring, cleaning corroded connectors, or replacing a blown fuse.
8. How much does it cost to fix the P0499 code on a 2017 Chevrolet Silverado?
The repair cost can range from $100 to $300 depending on whether the issue is with the vent valve itself or the wiring and connectors.
9. Can you drive with the P0499 code on a 2017 Chevrolet Silverado?
Yes, you can drive with this code, but it’s recommended to address the issue promptly to avoid potential emissions problems or further damage to the EVAP system.
10. Will clearing the P0499 code on a 2017 Chevrolet Silverado fix the problem?
Clearing the code will turn off the check engine light temporarily, but unless the underlying issue is resolved, the code is likely to return.
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